<!DOCTYPE html>
<html lang="en">
  <head>
    <meta charset="UTF-8" />
    <meta http-equiv="X-UA-Compatible" content="IE=edge" />
    <meta name="viewport" content="width=device-width, initial-scale=1.0" />
    <title>Document</title>
  </head>
  <body>
    <form>
      <input type="text" name="username" placeholder="请输入用户名" /><br />
      <input type="text" name="password" placeholder="请输入密码" /><br />
      <button type="submit">登录</button>
    </form>
  </body>
  <script src="https://cdn.jsdelivr.net/npm/axios/dist/axios.min.js"></script>
  <script>
    //接口地址 http://ajax-api.itheima.net/api/data

    //获取表单元素
    const form = document.querySelector("form");
    const usernameInput = document.querySelector("input[name=username");
    const passwordInput = document.querySelector("input[name=password");

    form.addEventListener("submit", function (e) {
      // 阻止默认事件
      e.preventDefault();

      //使用ajax提交表单数据
      axios({
        method: "post",
        url: "http://ajax-api.itheima.net/api/data",
        data: {
          username: usernameInput.value,
          password: passwordInput.value,
        },
      }).then((res) => {
        console.log(res);
      });
    });
  </script>
</html>
